—We must thank you for taking the trouble to cook us a meal.
—____.
| A．With pleasure | B．It doesn’t matter |
| C．It was no trouble at all | D．By all means |
.Scientists are trying to develop a special material, _______ they will make use of in space.
| A．it | B．that | C．what | D．one |
The education of _______young is always _______ hot and serious topic in modern society.
| A．the; / | B．a; the | C．/; the | D．the; a |
_________the authorities continue to crack down football betting _________a new hope in the future.
| A． If only; Chinese soccer can see | B． Only if; can Chinese soccer see |
| C． If only; can see Chinese soccer | D． Only if; see Chinese soccer can |
.—Why, Jack! Someone seems to have called you over there.
—Yes? I ________ that.
| A． am not realizing | B． haven’t realized | C． didn’t realize | D． don’t realize |
.—I wonder how much you charge for your services.
—The first two are free, _______the third costs ＄30.
| A． while | B． until | C． when | D． before |